Police were helped by the Territorial Support Group, but no further arrests were made.

There has been a rise in violent crime in the capital this year, with around 1,300 stabbings recorded in the city up to April 2018 alone.

In August, the number of murders in London passed the 100 mark, while earlier this year it was reported the city's murder rate had passed notoriously violent New York's for the first time since records began.